Fitting the gamma-ray spectrum from dark matter with DMFIT: GLAST and the galactic center region

By Tesla E. Jeltema, S. Profumo. 2008

162 citations recorded by the source corpus.

We study the potential of GLAST for unveiling particle dark matter properties with gamma-ray observations of the galactic center region. We present full GLAST simulations including all gamma-ray sources known to date in a region of 4° around the galactic center, in addition to the diffuse gamma-ray background and to the dark matter signal. We introduce DMFIT, a tool that allows one to fit gamma-ray emission from pair annihilation of generic particle dark matter models and to extract information on the mass, normalization and annihilation branching ratios into Standard Model final states. We assess the impact and systematic bias induced by background modeling and theoretical priors on the reconstruction of dark matter particle properties. Our detailed simulations demonstrate that for some well motivated supersymmetric dark matter setups with one year of GLAST data it will be possible not only to significantly detect a dark matter signal over background, but also to estimate the dark matter mass and its dominant pair annihilation mode.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/8c50d3870dc1068421bd205cf5486f146fd2297b

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In Astronomy and Astrophysics

1. Risa Wechsler
2. Andrey V. Kravtsov
3. E. Orlando
4. L. Hernquist
5. P. Hopkins
6. Simon D. M. White
7. Volker Springel
8. L. Strigari

In Nuclear and High Energy Physics

1. E. Orlando
2. L. Strigari
3. J. Gaskins
4. Troy A. Porter
5. G. Zaharijas
6. C. Gordon
7. O. Macias
8. I. Grenier

Citations in the corpus

• Dark matter and pulsar model constraints from Galactic Center Fermi-LAT gamma-ray observations (2013, methodology): “We calculated the gamma ray spectra from WIMPs self-annihilations with the DMFIT tool as described in [35].”
• Sensitivity projections for dark matter searches with the Fermi large area telescope (2016, methodology): “2 shows the prompt-emission spectra, dNγ/dEγ , per pair annihilation, for a variety of channels and DM masses [40].”
• Constraints on dark matter annihilation in clusters of galaxies with the Fermi large area telescope (2010, methodology): “Here the spectra are modeled using the DMFIT package [20]”
• SEARCHING FOR DARK MATTER ANNIHILATION IN RECENTLY DISCOVERED MILKY WAY SATELLITES WITH FERMI-LAT (2016, methodology): “The spectra were obtained from DMFit based on PYTHIA 8.165 using the Fermi ScienceTools (Jeltema & Profumo 2008; Ackermann et al. 2014, 2015b).”